JPS5869528A - Signal transmission system in endoscope - Google Patents

Signal transmission system in endoscope

Info

Publication number
JPS5869528A
JPS5869528A JP56167568A JP16756881A JPS5869528A JP S5869528 A JPS5869528 A JP S5869528A JP 56167568 A JP56167568 A JP 56167568A JP 16756881 A JP16756881 A JP 16756881A JP S5869528 A JPS5869528 A JP S5869528A
Authority
JP
Japan
Prior art keywords
signal
frequency
endoscope
solid
image
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP56167568A
Other languages
Japanese (ja)
Other versions
JPH048052B2 (en
Inventor
誠 村越
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujifilm Holdings Corp
Original Assignee
Fuji Photo Film Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Photo Film Co Ltd filed Critical Fuji Photo Film Co Ltd
Priority to JP56167568A priority Critical patent/JPS5869528A/en
Priority to US06/425,463 priority patent/US4519391A/en
Publication of JPS5869528A publication Critical patent/JPS5869528A/en
Publication of JPH048052B2 publication Critical patent/JPH048052B2/ja
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
    • A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
    • A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/66—Remote control of cameras or camera parts, e.g. by remote control devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
    • H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Biophysics (AREA)
  • Endoscopes (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は信号伝送方式に関し、とくに固体イメージセン
サを具備する内視鏡における信号伝送方式に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a signal transmission system, and particularly to a signal transmission system in an endoscope equipped with a solid-state image sensor.

固体イメージセンサを有する内視鏡は小型化、経済性の
面などで優れた利点を有することから有望視され実用化
の方向にある。このような内視鏡は、固体イメージセン
サとして例えば電荷結合デバイス（ｃｃＤ）あるいはパ
ケットブリブードデバイス（ＢＢＤ　）等を用い、被検
体の像を電気信号として取り出しこれをブラウン管など
の画像表示装置に導いて画像を再生するものである。Endoscopes equipped with solid-state image sensors have excellent advantages in terms of miniaturization and economy, and are therefore viewed as promising and are on the verge of being put into practical use. Such endoscopes use a charge-coupled device (CCD) or a packet-broadcast device (BBD) as a solid-state image sensor to extract an image of the subject as an electrical signal and guide it to an image display device such as a cathode ray tube. It is used to play back images.

内視鏡についてはあまり説明を要しないが、一般に内視
鏡には医療用のものと工業用のものとがちり、とくに医
療用のものには内視鏡先端部に鉗子具を装備し生体の患
部の治療を行うようにしたものもある。このような医療
用内視鏡には鉗子具の類として電気的処置具、例えば高
周波電気メスを装備し、その発生するジーール熱で患部
の切開および摘出を行なうものがある。There is no need to explain much about endoscopes, but in general, there are two kinds of endoscopes: medical ones and industrial ones.In particular, medical endoscopes are equipped with forceps at the tip of the endoscope, and are used to treat living organisms. Some are designed to treat the affected area. Some of these medical endoscopes are equipped with an electric treatment tool, such as a high-frequency electric scalpel, as a type of forceps tool, and use the Geel heat generated by the electric treatment tool to incise and remove the affected area.

ところで、電気的処置具を固体イメージセンサを用いた
内視鏡に内蔵させた場合には、電気的処置具に関係した
導線と、固体イメージセンサに関係した導線およびその
電気的要素との間に電気的誘導結合が生じ、とくに固体
イメージセンサ出力からの画像信号（ベースバンドのア
ナログ信号）がその伝送の途中で電気的処置具に関係し
た導線からノイズを受けることがある。By the way, when an electrical treatment instrument is built into an endoscope that uses a solid-state image sensor, there is a possibility that there will be a gap between the conductive wires related to the electrical treatment instrument and the conductive wires and their electrical elements related to the solid-state image sensor. Electrical inductive coupling occurs, and in particular, the image signal (baseband analog signal) from the solid-state image sensor output may receive noise from the conductor wires associated with the electrical treatment instrument during its transmission.

その結果、画像表示装置における忠実かつ鮮明な画像呵
生が困難であった。As a result, it has been difficult to produce faithful and clear images on image display devices.

本発明の目的は上記事情に鑑み、固体イメージセンサな
らびにこれに関連する電気的要素が、たとえば電気メス
々どの電気的処置具からの雑音の影響を受けず、内視鏡
操作部の画像表示装置に忠実かつ鮮明な内祝画像を表示
することのできる内視鏡における信号伝送方式を提供す
ることにある。In view of the above-mentioned circumstances, it is an object of the present invention to provide an image display device for an endoscope operating section, in which a solid-state image sensor and related electrical elements are not affected by noise from electrical treatment instruments such as an electric scalpel. An object of the present invention is to provide a signal transmission system in an endoscope that can display faithful and clear images of family celebrations.

本発明の特徴によれば、上記目的を達成するために、固
体イメージセンサからのアナログ画像信号が周波数変調
され、その周波数変調された画像信号の周波数帯域が電
気的処置具の駆動周波数の帯域を避けるように選択され
る。According to the features of the present invention, in order to achieve the above object, an analog image signal from a solid-state image sensor is frequency-modulated, and the frequency band of the frequency-modulated image signal exceeds the drive frequency band of the electric treatment instrument. chosen to avoid.

さらに本発明の特徴によれば上記目的をより効果的に達
成するために、固体イメージセンサと、このイメージセ
ンサに関連した電気回路要素と、周波数変調器とを電気
的に遮蔽するようにする。Further, according to a feature of the present invention, in order to achieve the above object more effectively, the solid-state image sensor, the electric circuit elements associated with the image sensor, and the frequency modulator are electrically shielded.

以下本発明を図とともに詳細に説明する。The present invention will be explained in detail below with reference to the drawings.

第１図は内視鏡システムの概略を示す説明図である。被
検体の像を結隊する対物レンズ１によって得られた光学
的画像情報はたとえば電荷結合デバイス（ＣＣＤ　）な
どの固体イメージセンサ２によって電気的信号に変換さ
れる。そしてその電気的信号はブロック３で示した信号
処理系で信号処理すなわちこの場合は増幅および周波数
変調された後、導線Ｌ１全通して復調器５に送られ、さ
らにビデオ回路６を介して画像表示装置としてのブラウ
ン管７に送られ、画像が再生される。ビデオ回路６から
の導線Ｌ２を介して固体イメージセンサ２′ｆ：駆動す
るためのクロリフ信号が送られる。符号８は電気的処置
具としての電気メスを示し、９は電極プレートで、電気
メス電源１０によって駆動され、治療すべき患部１１に
ジーール熱を発生させ患部１１を切開したり摘出したり
する。一般に電気メス電源１０の駆動周波数は３００　
ｋＨｚ　〜Ｉ　ＭＨｚが使用されている。このような周
波数を有する電気メス駆動電流が導線Ｌ３を介して電気
メス８に印加される。なおこれらの要素、す々わち対物
レンズ１、固体イメージセンサ２および導線Ｌｌ　、Ｌ
２　、Ｌ３の大部分が、一点鎖線で概念的に示す内視鏡
の鞘１２に収容されている。FIG. 1 is an explanatory diagram showing an outline of an endoscope system. The optical image information obtained by an objective lens 1 forming an image of the object to be examined is converted into electrical signals by a solid state image sensor 2, such as a charge coupled device (CCD). Then, the electrical signal is subjected to signal processing, that is, amplification and frequency modulation in this case, in the signal processing system shown in block 3, and then sent to the demodulator 5 through the conductor L1, and then sent to the demodulator 5 via the video circuit 6 for image display. The image is sent to a cathode ray tube 7 as a device, and the image is reproduced. The solid-state image sensor 2'f: A black lift signal for driving is sent via the conductor L2 from the video circuit 6. Reference numeral 8 denotes an electric scalpel as an electric treatment tool, and 9 is an electrode plate, which is driven by an electric scalpel power source 10 to generate Zeel heat in the affected area 11 to be treated to incise or remove the affected area 11. Generally, the driving frequency of the electric scalpel power supply 10 is 300.
kHz to I MHz are used. An electric scalpel drive current having such a frequency is applied to the electric scalpel 8 via the conducting wire L3. Note that these elements, namely the objective lens 1, the solid-state image sensor 2, and the conductive wires Ll and L
2, most of L3 is accommodated in the endoscope sheath 12, which is conceptually shown by a dashed line.

第１図から明らかなように、電気メス電源１０からの一
方の導線Ｌ３は内視鏡１２の内部（５） を、画像情報を伝送する導線Ｌ１とほぼ平行に伸びてい
る。従ってもし導線Ｌｌ上に従来の如く固体イメージセ
ンサ２から直接の、すなわちベースバンドの画像アナロ
グ信号が伝送されるならば、その画像アナログ信号は導
線Ｌ３上の電気メス駆動電流の影響、すなわちノイズを
受けることになるが、本発明によれば、導線Ｌｌ上の画
像信号は信号処理系３によって信号処理すなわち周波数
変調されているから、周波数変調の性質上本質的にノイ
ズの影響を受けない。As is clear from FIG. 1, one conductive wire L3 from the electric scalpel power source 10 extends inside the endoscope 12 (5) almost parallel to the conductive wire L1 that transmits image information. Therefore, if a direct, ie, baseband, image analog signal is transmitted from the solid-state image sensor 2 over the conductor L1 as in the past, the image analog signal will be free from the influence of the electric scalpel drive current on the conductor L3, that is, noise. However, according to the present invention, the image signal on the conducting wire Ll is subjected to signal processing, that is, frequency modulation, by the signal processing system 3, so that it is essentially not affected by noise due to the nature of frequency modulation.

本発明の特徴はとシわけこの信号処理系にあるので以下
この点について詳細に説明する。Since the feature of the present invention lies in this signal processing system, this point will be explained in detail below.

第２図は第１図における信号処理系３の内部構成を示し
ている。FIG. 2 shows the internal configuration of the signal processing system 3 in FIG. 1.

第２図において駆動回路３１は、第１図におけるビデオ
回路６から導線Ｌ２ｉ介して送られるクロック・ぐルス
を受けとって固体イメージセンサ２を駆動する。また増
幅器３２は固体イメージセンサ２からの電気的画像情報
すなわち電気的アナログ信号を増幅する。増幅器３２の
出（６） 力は周波数変調器３３において内部で発生する搬送波を
周波数変調し、導線Ｌ１を介して第１図における復調器
５へこれを送信する。周波数変調器３３へ印加される画
像信号すなわちベースバンド信号（変調信号）は第３図
に示す如き帯域を有している。すなわち、色画像信号と
してＯ〜６　Ｍ、Ｈｚの帯域にわたっている。周波数変
調器３３の構成についてはとくに新規なものは要求され
々いが、ここで重要なことは周波数変調における被変調
波すなわち搬送波の周波数帯域全電気的処置具、例えば
電気メスの周波数帯域（３００ｋＨｚ　〜Ｉ　ＭＨｚ　
）を避けるように設定することである。第４図には一例
として、搬送波に重量した画像信号の周波数帯域を１〜
７ＭＨｚに設定した場合を示している。この実施例では
、周波数変調器３３において固体イメージセンサ２から
の画像信号で搬送波を周波数変調し、導線Ｌ１へ送信さ
れる信号の周波数帯域が電気メス８の駆動電流の周波数
帯域３００　ｋＨｚ〜Ｉ　ＭＨｚ　ｆ避けてたとえばＩ
　ＭＨｚから７　ＭＨｚの周波数帯域になるように設定
されている。こうすることによって周波数変調された画
像信号は電気メス８の駆動電流による影響を受けること
なく画像表示装置すなわちブラウン管７において忠実か
つ鮮明な再生が行われる。In FIG. 2, a drive circuit 31 drives the solid-state image sensor 2 by receiving a clock signal sent from the video circuit 6 in FIG. 1 via a conducting wire L2i. The amplifier 32 also amplifies electrical image information, ie, electrical analog signals, from the solid-state image sensor 2. The output (6) of amplifier 32 frequency modulates an internally generated carrier wave in frequency modulator 33 and transmits it to demodulator 5 in FIG. 1 via conductor L1. The image signal, that is, the baseband signal (modulation signal) applied to the frequency modulator 33 has a band as shown in FIG. That is, the color image signal covers a band of 0 to 6 M, Hz. Although a new configuration is often required for the frequency modulator 33, what is important here is that the frequency band of the modulated wave, that is, the carrier wave in frequency modulation, is completely within the frequency band of an electrical treatment instrument, such as an electric scalpel (300 kHz). ~I MHz
) is to be set to avoid this. As an example, Figure 4 shows the frequency band of the image signal weighted on the carrier wave from
A case where the frequency is set to 7 MHz is shown. In this embodiment, the frequency modulator 33 frequency-modulates the carrier wave with the image signal from the solid-state image sensor 2, and the frequency band of the signal transmitted to the conductor L1 is within the frequency band of the driving current of the electric scalpel 8 from 300 kHz to I MHz. Avoid f, for example, I
The frequency band is set from MHz to 7 MHz. By doing so, the frequency-modulated image signal is faithfully and clearly reproduced on the image display device, that is, the cathode ray tube 7, without being affected by the drive current of the electric scalpel 8.

なお画像信号の忠実かつ鮮明な再生を一層効果的にする
ために、第２図に示した信号処理系３の各電気的回路要
素、および固体イメージセンサ２をシールドして接地す
るようにすればよい。この点は再び第１図を参照すれば
明らかなように、電気メス電源１０からの導線Ｌ３は固
体イメージセンサ２および信号処理系３の近傍にも伸び
ているため、これら電気的要素自体も導線Ｌ３からの電
気的影響を受ける可能性があシ、これによって画像信号
の忠実かつ鮮明な再生が損われることがある。従って第
１図の符号４で示した如くこれらの電気的要素をたとえ
ば金属包囲体で、シールドし、導線Ｌ４’（５介して接
地することが好ましい。In order to make the faithful and clear reproduction of the image signal even more effective, each electrical circuit element of the signal processing system 3 shown in FIG. 2 and the solid-state image sensor 2 may be shielded and grounded. good. This point can be made clear by referring to FIG. 1 again, as the conductor L3 from the electric scalpel power supply 10 extends to the vicinity of the solid-state image sensor 2 and the signal processing system 3, so these electrical elements themselves also have conductors. There is a possibility of electrical influence from L3, which may impair faithful and clear reproduction of the image signal. Therefore, it is preferable to shield these electrical elements, for example with a metal enclosure, as indicated by the reference numeral 4 in FIG. 1, and to ground them via a conductor L4' (5).

このように本発明によれば、内視鏡のベッドから画像表
示部へ伝送される画像信号が、外来雑音、とくに電気メ
スの駆動周波数帯域を避けた周波数スペクトルを有する
ように搬送波に重畳され、しかも周波数変調は本質的に
耐雑音性が大きいので、画像信号が外来雑音によって乱
される可能性は非常に小さい。したがって非常に良質の
内祝画像を画像表示装置に再生することができる。As described above, according to the present invention, the image signal transmitted from the bed of the endoscope to the image display section is superimposed on the carrier wave so as to have a frequency spectrum that avoids external noise, especially the drive frequency band of the electric scalpel. Moreover, since frequency modulation inherently has high noise resistance, the possibility that the image signal will be disturbed by external noise is very small. Therefore, it is possible to reproduce very high-quality family celebration images on the image display device.

なお本発明の精神を逸脱しない限シの修正、変更は本発
明の範囲に含まれる。たとえば、第２図に示す信号処理
系３は、固体イメージセンサ２から出力される画像信号
を直接取り扱っているが、たとえばマ）　ＩＪクス回路
などの回路を設けて標準の複合画像信号、たとえばＮＴ
ＳＣカラーテレビジョン信号としてもよい。Note that modifications and changes that do not depart from the spirit of the invention are included within the scope of the invention. For example, the signal processing system 3 shown in FIG. 2 directly handles the image signal output from the solid-state image sensor 2, but it is also equipped with a circuit such as an IJ circuit to process the standard composite image signal, such as an NT
It may also be an SC color television signal.

【図面の簡単な説明】 第１図は内視鏡システムの概略を示す説明図、第２図は
本発明に係る内視鏡における信号伝送方式を説明するた
めの第１図における信号処理系３の詳細を示す回路ブロ
ック図、 （９） 第３図はベースバンド画像信号の帯域を示す図、 第４図は周波数変調した画像信号の周波数帯域を示す図
である。 ２・・・固体イメージセンサ ３・・・信号処理系 ４・・・金属包囲体 ３２・・・増幅器 ３３・・・周波数変調器 特許出願人　富士写真フィルム株式会社（１０）[Brief Description of the Drawings] Fig. 1 is an explanatory diagram showing an outline of an endoscope system, and Fig. 2 is a signal processing system 3 in Fig. 1 for explaining a signal transmission method in an endoscope according to the present invention. (9) FIG. 3 is a diagram showing the band of the baseband image signal, and FIG. 4 is a diagram showing the frequency band of the frequency-modulated image signal. 2... Solid-state image sensor 3... Signal processing system 4... Metal enclosure 32... Amplifier 33... Frequency modulator patent applicant Fuji Photo Film Co., Ltd. (10)

Claims (1)

【特許請求の範囲】 １、　被写体を撮像して画像信号を出力する固体イメー
ジセンサと、該画像信号を受信して被写体の像を再生す
る画像再生手段とを有する内視鏡における信号伝送方式
において、該固体イメージセンサの出力する画像信号を
周波数変調する周波数変調手段と、該周波数変調された
画像信号を前記画像再生手段に伝送する伝送手段とを有
し、該周波数変調手段は、周波数変調された画像信号の
周波数帯域が電気的処置具などの雑音源の周波数帯域を
避けるように設定されていることを特徴とする内視鏡に
おける信号伝送方式。 ２、特許請求の範囲第１項記載の信号伝送方式において
、前記内視鏡は電気的処置具として電気メスを有するこ
とを特徴とする内視鏡における信号伝送方式。 ３、特許請求の範囲第１項または第２項記載の信号伝送
方式において、前記固体イメージセンサおよび周波数変
調手段は電気的に遮蔽されていることを特徴とする内視
鏡における信号伝送方式。[Scope of Claims] 1. In a signal transmission system for an endoscope that includes a solid-state image sensor that images a subject and outputs an image signal, and an image reproduction means that receives the image signal and reproduces an image of the subject. , comprising a frequency modulation means for frequency modulating the image signal output from the solid-state image sensor, and a transmission means for transmitting the frequency modulated image signal to the image reproduction means, the frequency modulation means is configured to frequency modulate the image signal output from the solid-state image sensor. A signal transmission method for an endoscope, characterized in that the frequency band of the image signal obtained by the image signal is set so as to avoid the frequency band of a noise source such as an electric treatment instrument. 2. A signal transmission system for an endoscope according to claim 1, wherein the endoscope has an electric scalpel as an electric treatment tool. 3. A signal transmission system for an endoscope according to claim 1 or 2, wherein the solid-state image sensor and the frequency modulation means are electrically shielded.
JP56167568A 1981-10-20 1981-10-20 Signal transmission system in endoscope Granted JPS5869528A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP56167568A JPS5869528A (en) 1981-10-20 1981-10-20 Signal transmission system in endoscope
US06/425,463 US4519391A (en) 1981-10-20 1982-09-28 Endoscope with signal transmission system and method of operating same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56167568A JPS5869528A (en) 1981-10-20 1981-10-20 Signal transmission system in endoscope

Publications (2)

Publication Number Publication Date
JPS5869528A true JPS5869528A (en) 1983-04-25
JPH048052B2 JPH048052B2 (en) 1992-02-13

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Country Status (2)

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US (1) US4519391A (en)
JP (1) JPS5869528A (en)

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DE3431994A1 (en) * 1983-09-05 1985-04-04 Olympus Optical Co., Ltd., Tokio/Tokyo Noise suppression device for an endoscope
US4615330A (en) * 1983-09-05 1986-10-07 Olympus Optical Co., Ltd. Noise suppressor for electronic endoscope
US4618885A (en) * 1983-09-05 1986-10-21 Olympus Optical Co., Ltd. Electromagnetic noise preventive means for an endscope with solid state image pickup element
DE3432228A1 (en) * 1983-09-05 1985-04-04 Olympus Optical Co., Ltd., Tokio/Tokyo NOISE REDUCTION DEVICE FOR AN ENDOSCOPE
JPS6073612A (en) * 1983-09-30 1985-04-25 Olympus Optical Co Ltd Solid-state image pickup device for endoscope
JPS60208726A (en) * 1984-04-02 1985-10-21 ウエルチ・アリン・インコ−ポレ−テツド Image sensor assembly
JPS61163316A (en) * 1985-01-14 1986-07-24 Olympus Optical Co Ltd Endoscope
DE3627327A1 (en) * 1985-08-16 1987-02-26 Olympus Optical Co ENDOSCOPE
US4777524A (en) * 1986-08-08 1988-10-11 Olympus Optical Co., Ltd. Endoscope having an electrically insulated solid-state image sensing unit
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JPS62253275A (en) * 1987-03-31 1987-11-05 Olympus Optical Co Ltd Endoscope with built-in solid-state image pickup element
JPH05154101A (en) * 1992-05-18 1993-06-22 Olympus Optical Co Ltd Endoscope
US8546738B2 (en) 2005-03-23 2013-10-01 Sony Corporation Physical quantity distribution detector having a plurality of unit components with sensitivity to a physical quantity change of light
JP2011041295A (en) * 2010-09-08 2011-02-24 Sony Corp Physical quantity distribution detection apparatus and physical information acquisition apparatus
JPWO2023013106A1 (en) * 2021-08-02 2023-02-09
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Publication number Publication date
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JPH048052B2 (en) 1992-02-13

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